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alina1380 [7]
3 years ago
5

Someone mind helping out?

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
6 0

Answer:

15 ft

Step-by-step explanation:

Pythagoras formula for a triangle with a 90 degree angle :

a^2 + b^2 = c^2

c is the side opposite of the 90 degree angle. exactly or situation here.

=> 9^2 + 12^2 = x^2

=> 81 + 144 = x^2 = 225

=> x = sqrt(225) = 15

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there are nickels, dimes, and quarters in a piggy bank. altogether, the coins are worth $3.65. the number of dimes is three time
hoa [83]

This question is solved using a system of equations, and doing this, we get that: There are 9 quarters, 4 nickels and 12 dimes.

I am going to say that:

x is the number of nickels.

y is the number of dimes.

z is the number of quarters.

In all, they are worth $3.65.

A nickel is worth $0.05, a dime is worth $0.1 and a quarter is worth $0.25, so:

0.05x + 0.1y + 0.25z = 3.65

Dimes: 3 times greater than nickels:

This means that:

y = 3x

Quarters: One greater than double the number of nickels:

This means that:

z = 2x + 1

Value of x:

We have y and z as function of x, so we can replace into the equation and find the value of x, so:

0.05x + 0.1y + 0.25z = 3.65

0.05x + 0.1(3x) + 0.25(2x+1) = 3.65

0.05x + 0.3x + 0.5x + 0.25 = 3.65

0.85x = 3.4

x = \frac{3.4}{0.85}

x = 4

y and z:

y = 3x = 3(4) = 12

z = 2x + 1 = 2(4) + 1 = 9

There are 9 quarters, 4 nickels and 12 dimes.

A similar question is found at brainly.com/question/17096268

4 0
2 years ago
Craig is folding laundry for his family. in the basket 1/6 of the shorts belong to his older brother and 3/6 of the shirts belon
marishachu [46]
I'm assuming you meant shirts instead of shorts for the older brother.

1/6 + 3/6 = 4/6

4/6 of the shirts belong to his brothers
(or 2/3 if you simplify the fraction)
5 0
3 years ago
What the rule would be?
katrin [286]

To go to kite  2, kite 1 must go up 6  then  6 to the left

The rule  x + 6, y - 6.

5 0
3 years ago
What are the answers to all 3 questions? I really need it. I need the Perimeter and Area as it says in the instructions​
Art [367]
1) 38cm
2) 2304cm^2
3) 64cm^2

To find the area you multiply the sides
To find the perimeter you add the sides
7 0
3 years ago
A truck has left point A with a speed of 60 mph. After 2 hours a car has left point A with a speed of 90 mph. At what distance f
Grace [21]

Answer:

360 miles

Step-by-step explanation:

When the second car catches up with the first car they will have travelled the same distance which we call x miles.

Speed = distance / time

For first car   60  = x / t       where t = time taken

giving x = 60t

for second car   90 =  x / (t - 2)

giving x =  90t - 180

So equating these 2 equations

60t = 90t - 180

30t = 180

t = 6 hours

So x the distance  =  60t = 360 miles   answer

3 0
3 years ago
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